GB1023478A - Advanceable roof support assembly - Google Patents

Advanceable roof support assembly

Info

Publication number
GB1023478A
GB1023478A GB35330/63A GB3533063A GB1023478A GB 1023478 A GB1023478 A GB 1023478A GB 35330/63 A GB35330/63 A GB 35330/63A GB 3533063 A GB3533063 A GB 3533063A GB 1023478 A GB1023478 A GB 1023478A
Authority
GB
United Kingdom
Prior art keywords
line
valve
pressure
valves
jack
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB35330/63A
Other languages
English (en)
Inventor
Michael Charles Potts
Douglas Herbert Hewlett Bolton
Frank Pawling
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dowty Mining Equipment Ltd
Original Assignee
Dowty Mining Equipment Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to DENDAT1249796D priority Critical patent/DE1249796B/de
Application filed by Dowty Mining Equipment Ltd filed Critical Dowty Mining Equipment Ltd
Priority to GB35330/63A priority patent/GB1023478A/en
Priority to US394359A priority patent/US3319529A/en
Publication of GB1023478A publication Critical patent/GB1023478A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
    • E21D23/26—Hydraulic or pneumatic control

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Fluid-Pressure Circuits (AREA)
GB35330/63A 1963-09-06 1963-09-06 Advanceable roof support assembly Expired GB1023478A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DENDAT1249796D DE1249796B (de) 1963-09-06
GB35330/63A GB1023478A (en) 1963-09-06 1963-09-06 Advanceable roof support assembly
US394359A US3319529A (en) 1963-09-06 1964-09-03 Advanceable roof support assemblies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB35330/63A GB1023478A (en) 1963-09-06 1963-09-06 Advanceable roof support assembly

Publications (1)

Publication Number Publication Date
GB1023478A true GB1023478A (en) 1966-03-23

Family

ID=10376513

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35330/63A Expired GB1023478A (en) 1963-09-06 1963-09-06 Advanceable roof support assembly

Country Status (3)

Country Link
US (1) US3319529A (de)
DE (1) DE1249796B (de)
GB (1) GB1023478A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2118603A (en) * 1982-04-06 1983-11-02 Gewerk Eisenhuette Westfalia Control apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE794193A (fr) * 1972-03-16 1973-05-16 Gewerk Eisenhuette Westfalia Systeme de commande sequentielle pour le ripage automatique d'un groupe d'elements de soutenement

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2112466A (en) * 1935-11-16 1938-03-29 Heil Co Grader control mechanism
US2607197A (en) * 1949-08-06 1952-08-19 Keller Tool Co Sequential motor operation under control of individual, fluid actuated, relieved pressure valves
US2859022A (en) * 1955-04-04 1958-11-04 Dowty Mining Equipment Ltd Hydraulic roof supports and conveyor feed jacks
GB991009A (en) * 1962-06-07 1965-05-05 Dowty Mining Equipment Ltd Mining apparatus
GB990837A (en) * 1963-04-05 1965-05-05 Dowty Mining Equipment Ltd Roof support assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2118603A (en) * 1982-04-06 1983-11-02 Gewerk Eisenhuette Westfalia Control apparatus

Also Published As

Publication number Publication date
US3319529A (en) 1967-05-16
DE1249796B (de) 1967-09-14

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